https://www.youtube.com/watch?v=kqZg0zGe0Jk
https://onlinemediamasters.com/w3-total-cache-settings/
Install:
apt install memcached libmemcached-tools php-memcached
Increase memory cap to 2GB:
vim /etc/memcached.conf -m 2048
Restart services:
systemctl restart memcached systemctl restart apache2
View cached items:
memcdump --servers=localhost